Hair straightening comb



FIG. 1 is a perspective view of a hair straightening comb;

FIG. 2 is a front orthogonal view thereof (a rear orthogonal view being symmetric to the front orthogonal view);

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing illustrates environmental structure only and forms no part of the claimed design. 

CLAIM The ornamental design for a hair straightening comb, as shown and described. 